“Malignant tumor” means malignant tumor, i.e. cancer, which can be prevented by paying attention to diet and hygiene, combining work and rest, and doing a good job of self-protection. 1. Pay attention to diet and hygiene: It is recommended to improve one’s own bad behavior, quit smoking and drinking, so as to reduce the presence of cancer-causing factors. Change your diet structure, pay attention to balanced nutrition, low fat, low salt, and eat more fresh vegetables and fruits. 2. Combination of work and rest: Ensure sufficient sleep time, try to maintain a stable mood, relieve their own stress, less angry, avoid overwork leading to a decline in their own immunity, to avoid a variety of diseases to take advantage of the situation, the development of malignant tumors may be. Appropriately strengthen their own sports, improve their own immunity. 3. Do a good job of their own protection: for the external work or life encountered in the adverse environment, should do a good job of their own protection, wear dust detoxification facilities. Indoor decoration to avoid the use of pollution exceeding the standard material, and the biological factors related to malignant tumors can take vaccination prevention, such as HPV vaccine, hepatitis B vaccine. For malignant tumors, it is recommended that patients do a good job of prevention and try to achieve early detection, early prevention and early treatment. Timely adjust their own mentality and actively cooperate with doctors for treatment.